Fig. 4.
Quantification of the effect of a real motion on cortical responses to apparent motion stimuli. (A) Amplitude of Δ response in the cortical regions representing path A (red) and path B (blue) from the example experiment shown in Figs. 2 and 3. Dashed gray lines mark the starting time of each apparent (light gray) or real (dark gray) motion. White square (Inset) indicate the region in which the amplitude was measured. (B) Difference in the amplitude of Δ response between the cortical regions representing path A and path B. (Upper) For the example shown in A. (Lower) Average across all experiments (n = 19). Shaded area indicates ± SEM. Arrows mark the oscillations at the temporal frequency of real motion. (C and D) Correlation coefficients between Δ response for a single sweep of real motion (template) and each set of apparent motion, for the example shown in A and B and the average of all experiments (n = 19; **P = 3 × 10−8, *P = 0.025).